An Idaho State Police trooper stops a driver last summer. As Washington state works out the various complications of its new law, including the fact that marijuana is still illegal under federal statute, neighbors of the state are watching with curiosity.

PORTLAND, ore. — Now that marijuana is legal in neighboring Washington state, Portland police are offering some helpful advice to Oregon pot users. Sure, you can go over to Washington state to “smoke some weed,” a police advisory states, but you might get arrested for driving under the influence if you’re pulled over coming home, even if you’re on a bike.

And if you are among the 55,000 people with an Oregon medical-marijuana card, Portland police say you’ll be able to get your allowed amount of medicine in Washington state. Still, even though you now can’t get busted for toking in Tacoma or elsewhere in Washington (though you could get a ticket for public use), it will be a year before selling or buying it is legal.

As the Evergreen State works out the various complications of its new law — including the fact that marijuana is illegal under federal law — neighbors of Washington are watching with curiosity and perhaps some apprehension.

If the federal government doesn’t attempt to intervene in the new law, and if Washington state sets up a supply system whose mechanics are yet to be defined, Washington might well become a greater source of pot for users in Oregon and Idaho.

“It would be like a place people go to get cheap beer. We’re not talking about medical marijuana. We’re talking about people who just want to get high,” said Josh Marquis, district attorney for Oregon’s Clatsop County.

Marquis said he is not totally opposed to marijuana. He thinks the federal government should do what Oregon has done: decriminalize possession of small amounts and allow people with genuine medical needs to have access for treatment.

But one of his greatest concerns, echoed by other law officials, is people going over to Washington to obtain weed and driving home stoned.

“If I’m going to drive on the Oregon coast at night, in the driving rain, I want the person on the other side of the road to be completely unimpaired,” Marquis said.

Idaho law officials are also watching what’s happening in Washington state. Unlike Oregon, Idaho has no medical-marijuana law, and possession in any form is against the law. Simple possession of less than 3 ounces is a misdemeanor, punishable by up to a year in jail and a $1,000 fine.

Idaho officials already have their hands full with Idahoans obtaining medical-marijuana cards out of state. The Gem State borders three medical-marijuana states, and medical- marijuana arrests outpace those of traffickers or other users.

Idaho State Police Lt. Chris Schenk says people in north Idaho are joking about so-called “pot tourists” crossing the border to take advantage of Washington’s relaxed law. But he says it’s going to take time to gauge any increases in arrests for possession or driving under the influence.

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